Metal detector



FIG. 1 is a perspective view of a first embodiment of a metal detector showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view of a second embodiment of a metal detector;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a right-side view thereof;

FIG. 12 is a left-side view thereof;

FIG. 13 is a top view thereof; and,

FIG. 14 is a bottom view thereof.

The broken lines appearing in FIGS. 1-14 form no part of the claimed design. 

CLAIM The ornamental design for a metal detector, as shown and described. 